• Sudoku 4ever Free 1
  • Sudoku 4ever Free 2
  • Sudoku 4ever Free 3
  • Sudoku 4ever Free 4

Sudoku 4ever Free

Unlimited number of puzzles, eight difficulty levels, world-class hint engine and game statistics
- simply the best Sudoku app on the market.
••••
• Game Play •••••


★ Eight different Sudoku variants: Classic & Jigsaw puzzles (aka Squiggly), Asterisk-, Centerdot-, Color-, Hyper-, Percent
- & X-Sudokus
★ Eight difficulty levels: very easy, easy, moderate, advanced, hard, very hard, fiendish, nightmare
★ Six input methods (digit first, cell first, mixed, Andoku cell first, Andoku digit first, popup)
★ Pencil marks with auto set or auto erase
★ Persistent undo/redo
★ Auto save
★ Bookmarks
★ Highlighting of selected digits and pencil marks
★ Highlighting of completed digits
★ Highlighting of incorrect digits
★ Coloring mode (cells and pencil marks) to support coloring solving techniques
★ Very advanced hint functionality
★ Analysis functionality to rate the difficulty of a Sudoku puzzle and to get a detailed list of required solving techniques
★ Game statistics: fastest, average, slowest times and total time played for each difficulty level
★ Extremely configurable
★ The integrated solver solves any Sudoku in milliseconds

••••
• Supports •••••

✔ Portrait and landscape mode✔ All screen types and sizes✔ Touch screen, keyboard and trackball✔ Installation on external storage (e.g. sdcard)✔ Android 1.6-4.x

••••
• Hint Functionality •••••


★ Full House
★ Hidden Single
★ Hidden Subset (Pair, Triple + Quad)
★ Naked Single
★ Naked Subset (Pair, Triple + Quad)
★ Locked Candidates (Pointing + Claiming)
★ X-Wing (Regular, Finned + Sashimi)
★ Swordfish (Regular, Finned + Sashimi)
★ Jellyfish (Regular, Finned + Sashimi)
★ XY-, XYZ-, WXYZ-, VWXYZ-, UVWXYZ-, TUVWXYZ-, STUVWXYZ-, RSTUVWXYZ-Wing
★ W-Wing
★ Almost Locked Candidates (Pair, Triple + Quad)
★ Avoidable Rectangle (type 1 + 2)
★ Hidden Unique Rectangle
★ Uniqueness Test (type 1, 2, 3, 4 + 5)
★ BUG+1, BUG+2, BUG+3 and BUG+4
★ Aligned Pair + Triple Exclusion
★ Sue de Coq
★ ALS-XZ, ALS-XY-Wing
★ Remote Pairs
★ Bidirectional Cycles
★ Forcing X-Chains
★ Forcing XY-Chains
★ Nishio Forcing Chains
★ Double Forcing Chains
★ Contradiction Forcing Chains
★ Region Forcing Chains
★ Cell Forcing Chains

If you like the game, don't forget to rate it!

The free version is supported by unobtrusive ads

Category : Puzzle

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Reviews (30)

Ms. D. Oct 24, 2019     

The best there is. Don't look anywhere else. It has EVERYTHING you need. Perhaps the most useful is the 'hint' function. It tells what technique to use at any stage of the puzzle, AND explains the logic of the techniques. HOWEVER, with the latest update it keeps crashing ALL THE TIME.

A. G. u. Nov 12, 2018     

Since the beginning of November, finishing a puzzle brings the summary display in a flashing, jittery and unresponsive mode. The display is strobe-like, so it may cause an epileptic response!

Joh. J. Jan 2, 2020     

This game is great, but ads are unacceptable. They are sexually oriented and or have audio sounds which should NOT be used on ANY phone app. Don't need that kind of attention while in a crowd or a meeting.

Eri. S. Dec 28, 2020     

This is a solid game, and its hint system helps you learn how to play as you go. I've spent many more hours, days, and weeks playing this game than I'd care to admit. Great app!

El. T. Jan 24, 2020     

Pretty puzzles. Hints that help but don't give it away.

C.B. S. Dec 8, 2019     

My favorite Sudoku app because it has the Sudoku X variant.

Jor. G. Nov 9, 2020     

Very bad, no generates new game.

Nic. D. Aug 16, 2021     

couldn't edit tic marks....

Jas. H. May 12, 2022     

One GREAT feature this app has over every other sudoku app I've tried is the ability to select a number FIRST and then put that number into multiple squares (instead of being stuck working one square at a time). My only complaint about this app is the difficulty spike from Hard to Expert. Hard uses only X-Wing, but not XYZ-Wing or XY-Wing. Expert has those but also has things like WXYZ-Wing which only a computer can solve. A difficulty in between those two would make this app perfect.

Man. S. Aug 27, 2020     

I really love the Sudoku options in this app, but almost all of the ads lately are pro-Trump. I prefer nonpolitical ads, so I've down-graded my review from 5 stars to 1 and am looking for a new Sudoku app.

Nik. O. Apr 18, 2017     

Extremely rich and flexible configuration, great UI, very stable. No adds on the play screen. This should be the golden standard for Sudoku apps.

Kev. t. Aug 26, 2017     

Hints and analysis are implemented beautifully. If you're coming from another sudoku app, persist, with its many customisations possible you can pretty much set it up as you want.

Dar. H. Oct 20, 2019     

Needs setting to stop autoplay of ads or always mute them. I like to play sometimes when I can't sleep, and the intrusive noise is extremely annoying to people around me. If I uninstall, it will be because of this alone.

Mal. H. Aug 9, 2017     

Best Sudoko on Google Play. Plenty of different versions and difficulty levels to keep the most avid sudoko player happy.

Gra. J. Aug 23, 2017     

Best sudoku app ive ever seen. Great tutorials and hints that help you learn how to solve the hard puzzels!

amy. f. Dec 17, 2017     

Great game play lots of options in settings to make it play the way I like

Dan. M. May 12, 2016     

Great version. Ads are a bit annoying, but hey it's free.

Die. R. May 7, 2016     

Tried many but this the best I have come across.

Pet. Y. Apr 28, 2016     

With the best hint engine, I can learn sudoku so fast. This is really awesome. Sometimes, the game freezes during the play, but this won,t stop my addiction to it.

Mar. L. Oct 31, 2015     

I have been enjoying playing and up to the last few days have had no problems. However it has started to freeze, whilst the clock is still ticking away and then ..... the whole board disappears and the screen goes black and I can't find the game anymore. What a total waste of time. I shall persevere for a few more days but if it doesn't resolve itself I shall uninstall this app. At that point I would rate it no stars.

Adr. L. Aug 1, 2015     

Not able to check answers properly

sam. r. Nov 9, 2015     

I am THRILLED that I finally found a sudoku I can color. Coloring your sudoku is important to solve a hard puzzle by a true/false analysis. Thank you! I do have one suggestion. I would like a button to toggle between cell first/number first. That would make this app over the top. Bravo!

Din. F. May 29, 2015     

I love their version, I can play no other. After 700+ game plays on this (this one is still going strong, but the least I can do is give them $1.99) I'm buying their Plus version right now!

--. Feb 3, 2016     

The best sudoku app there is, if you prefer the NumPad layout and tapping the numbers instead of the field first. It doesn't have achievements but everything else makes up for it.

A. G. u. Sep 22, 2015     

It's a pain to remove numbers you have entered. Settings says to use the erase button but it doesn't work. Other apps have a delete button that actually works. With this app you must select the number you want to remove then select the square to remove it. It's a pain to remove multiple numbers.

Sal. C. Mar 19, 2016     

Loved this game! But for a week or so I've been stuck in the settings screen and can't figure out how to get back to the game. Can someone help?

Raj. V. Apr 9, 2016     

Guys. Please give us iOS version. I miss this.

Wav. W. Jun 9, 2015     

I love it only wished there was more of the jigsaw puzzles

Kha. S. Sep 8, 2015     

This is 1 in all sudoku

Joh. M. Jul 16, 2015     

As one I already got.